A
Discworld novel by celebrated
British author
Terry Pratchett. More or less a
parody of the
Roman Catholic Church dating from the time of the
Spanish Inquisition. Tells the story of the great god
Om, revered and worshipped by the entire country of Omnia, or at least he's supposed to, and his last great
prophet Brutha.
Most of PTerry's Discworld novels have recurring characters, like the Wyrd Sisters or Rincewind or Death. This is one of the rare standalone books which actually occurs many centuries before the other novels even appear on the map. ("Future" Omnians have appeared in Ankh-Morpork in successive novels, so it's not entirely standalone. But none of the actual characters do.)